Opening VS2005 project in VS2008

If you were using Visual Studio 2005 for your web project and now you wish to switch to Visual Studio 2008, all you need to do is:

•	Start Visual Studio 2008

•	Click File -> Open web site...

•	Choose the folder with your web project on the disk and click OK.

•	If you're asked if you wish to upgrade the web site to .NET Framework 3.5, choose Yes.

You may receive a compilation error saying there are different versions of the System.Web.Extensions.dll library in the Global Assembly Cache (GAC) and a temporary folder. In this case, you need to locate the file bin/System.Web.Extensions.dll in your web project and delete it.